Sash-fastener



(No Model.)

U. H. BALCONI.

SASH PASTE NBR.

No. 524,697. Patented Aug. 21, 1894.

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UNrTTED STATES PATENT Orrrcn.

URIAH H. BALCOM, OF DOWNERS GROVE, ILLINOIS.

sAsHy-FASTENER.

SPECIFICATION forming part of Letters Patent No. 524,697, dated August 21, 1894.

Application `filed April 18,1893. Serial No. 470,910. (No model.)

To a/ZZ whom, it may concern:

B e it known that I, URIAH H. BALCOM, a resldent of Downers Grove, in the county of Du Page and State of Illinois, have invented certain new and useful Improvements in Window-Sash Fasteners; and I do hereby declare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, and to the letters of reference marked thereon, which form a part of this specification.

This invention relates to sash fasteners for windows, of that class embracing a catch or detent by which the sash is held from 1novement relatively to the frame.

Various devices have been heretofore constructed, some designed to secure the sash against opening when closed, and others designed to adjustably support or secure one sash or the other at various degrees of openlng. In the former class of fasteners, when the sash are once partially opened, the lock 1s useless to prevent the further opening thereof, while in the latter class a fastener must be provided for each sash.

My invention is designed to overcome theseobjections and combines various features of unprovement embracing a fastener of the character described, adapted to lock both sash of the window against opening,and one adapted to lock the sash together when partially open and against further opening with relation to each other and to the window casing.

The invention may be more readily understoodby reference to the accompanying drawings, 1n which are shown two slightly different forms of my invention. y i

In the drawings: Figure 1 is a front elevation of a window provided with my improved sash fastener. Fig. 2 is a top plan View of the fastener, showing the notched bars or stop plates in section taken on line 2-2 of Fig. 1. Fig. 3 is avertical section of the fastener taken on the line 3-3 of Fig. 2. Fig. 4 is a perspective view of the pawl or detent shown in Fig. l. Fig. 5 is a front elevation similar to that shown in Fig. 1, showing a modification of the fastener. Fig. 6 is a top plan View of the modification shown in Fig. 5, showing the apertured bars or stop plates in section taken on line 5-5 of Fig. 5.

Referring to said drawings, Figs. l to et, A indicates the base plate of the fastener, which is adapted to be secured by screws or otherwise on the upper side of the top rail s of the inner or lower sash S, near one end thereof. To said plate Ais pivoted an L-shaped pawl or detent B, adapted to swing in a vertical plane and having two arms, one of which extends upwardly and forms the pawl proper and the other laterally outwardly to form a linger piece for moving the pawl. As herein shown the pivotal connection of the pawl with the plate is formed bya slot a in the central rear portion of the plate, adapted to receive the pivot lug b formed on the exterior angle of the pawl or detent, and within which slot said pawl is pivoted by a pin b' passing transversely through the plate A and through an aperture in said lug b. Said base plate is adapted to be firmly secured to said top rail in such position that the pawl B shall project into the angle formed where the face of the side rail s of the upper sash S meets the inner side'face of the window frame E or inner surface of the part-ing stop c, asclearly shown in said drawings. The upper end or arm of said L-shaped pawl is provided with two faces b2, b3 arranged at an angle with each other and adapted to fit into said angle and to engage a series of ratchet teeth or notches c c' provided in ratchet bars C, C secured, the one bar C vertically against the inner face of the side rail s of the upper sash, andthe other bar C vertically against the 'inner face of the parting stop e of the window frame. The outwardly extending end of saidpawl or detent B is suitably shaped to form a thumb-piece h4 for manipulating the pawl, and the latter is held yieldingly against the ratchet plates C and O by means of a Ushaped spring F, suitably secured to the base plate A and exerting its pressure against the under sideof the thumb-piece b4. When the notches or stops c c are formed in a separate strip or plate, as shown in this in;

stance, these plates will be let into and Iiush with the face of the side rail of the sash and the inner face of the parting stop or window frame, respectively. It is obvious that with this construction either or both sash may be opened to any desired extent and the spring pressed pawl or detent will operate to automatica'lly engage' the ratchet teeth or notches c and c at any point at which it is desired to leave the sash and will thereby prevent the farther opening ofthe Window, although it is obvious that owing to the shape of the said ratchet teeth, either sash may be closed without manipulating the fastener.

In order to avoid all possibility of the fastener being picked by the pawl B being forced out of the notches c by means of a thin knife or other instrument introduced between the sash from the outside, the under side of the pawl beneath the face b2 is recessed so as to form an upwardly and inwardly inclined face onhooked portion b5, against which anyinstrument so inserted between the sash will strike and thereby tend to force the pawl fartherinto rather than out of the notches.

In Figs. 4 and 5I have shown a modification, constructed similar in all respects to that shown in Figs. l to 6, with the exception that in place of the plates C C provided with ratchet teeth or notches, are substituted plates C2 and C3 provided with notches or recesses e203 having parallel sides, at right angles or nearly so with the faces of the plates, adapted to receive lugs be b6 formed on each of the two faces of the pawl or detent B.

The operation of the fastener constructed in this manner is exactly like that of the former construction, with the exception that in this instance the notches or recesses being without inclined faces, but on the contrary, having square shoulders for engagement with the lugs or projections 19666 of the pawl or detent, operate to rigidly or immovably lock the sash together and to the side of Vthe casing, so thatit is necessary to actuate the pawl or detent by pressure of the hand on the thumbpiece in order to effect the movement of the sash in either direction.

By the foregoing constructions Iprovide a sash fastener which is simple, strong, may be cheaply constructed by casting or otherwise forming from suitable metal,is easily applied, and which enables either or both sash to be left partially open without rendering the Window insecure against intrusion.-

I claim as my invention- 1. A window sash fastener, comprising a base plate adapted for attachment to thetop of the lower sash, a pawl or detent mounted on said plate so as to oscillate in a vertical plane oblique to the face of the sash and arranged to project into the angle formed by the side casing of the window and the inner face of the upper sash, said pawl being provided with two similar projections adapted for simultaneous engagement with notches located on the opposite sash and on the side of the window casing, and with a thumb-piece by which it may be actuated,substantially as set forth.

2. A Window sash fastener, comprising two series of ratchet notches, located one on the side casing and the other on the inner face of the upper sash, a base plate adapted for attachment to the top of the lower sash,'and a spring-pressed pawl or detent mounted on said base plate so as to oscillate in a vertical plane 'oblique to the face of the sash and arranged 

